PVCS-60

Updated: 2026-08-12

Overview

PVC-S60 is a suspension-polymerized polyvinyl chloride resin with a K-value of 60, indicating medium molecular weight. It's engineered for applications requiring superior impact resistance and processability. The 'S' denotes its suspension polymerization method, which yields porous particles ideal for plasticizer absorption. As a commodity thermoplastic, it's widely modified with stabilizers, lubricants, and impact modifiers to enhance performance. Its balance of mechanical properties and cost-effectiveness makes it a staple in rigid PVC formulations across industries.

Physical and Chemical Properties

PVC-S60 exhibits a bulk density of 0.45-0.55 g/cm³ and a porosity that facilitates rapid plasticizer absorption. Its Vicat softening temperature ranges from 70-80°C, suitable for most indoor applications. The resin's inherent flame retardancy (LOI ~45%) comes from its chlorine content. Chemically, it resists acids, alkalis, and alcohols but swells in aromatic hydrocarbons. Its tensile strength (50-60 MPa) and notched Izod impact strength (5-10 kJ/m²) can be significantly enhanced through compounding. Thermal stability is typically maintained up to 180°C during processing with proper stabilizers.

Main Applications

In construction, PVC-S60 is the backbone of unplasticized PVC (uPVC) profiles for windows and doors, offering weatherability and energy efficiency. Pressure pipes made from this resin account for 60% of global plastic pipe demand due to corrosion resistance. The automotive sector uses it for underbody coatings and interior trim components. In electrical applications, it serves as primary insulation for wires and cables. Emerging uses include 3D printing filaments and medical tubing when compounded with biocompatible additives.

Safety and Storage

PVC-S60 requires precautions against dust explosion (minimum ignition energy ~30 mJ). Storage silos should have explosion vents, and bulk bags must be grounded during transfer. The resin is stable under normal conditions but may degrade at temperatures above 100°C, releasing hydrogen chloride. Workplace exposure limits for PVC dust are typically 5 mg/m³ (respirable fraction). Processors should install local exhaust ventilation near mixing equipment. Firefighting requires dry chemical or CO2 extinguishers—water may spread molten PVC.

B2B Procurement Guide

Industrial buyers should specify K-value (60±1), apparent density (≥0.45 g/cm³), and sieve analysis (>99% through 0.25 mm mesh). Request certificates for RoHS, REACH, and FDA compliance if applicable. Bulk shipments require moisture-proof containers with desiccant packs. For quality assurance, test plasticizer absorption (DOP absorption ≥25 g/100g) and hot plasticizer number (≤12 min). Consider suppliers offering technical support for compound development. Spot prices fluctuate with vinyl chloride monomer (VCM) feedstock costs—long-term contracts often include monomer price escalators.